138 BOTANY. Galium miceophyllum. Gray (Pl Wright. 1, p. 80).—Smooth, ascend¬ ing, ribbed stems, quadrangular, with obtuse angles; four Unear-lanceolate leaves in a whorl, 3-5" long, with distinct mid and marginal nerves, some¬ what apiculate; peduncles axiUary, one-flowered, or more frequently (in my specimens) prohferous from the involucre; fruit pruinose.—Tanks south of Camp Apache, Ariz. (271). A well-marked species. Galium aspeeeimum, Gray.—(425), from Mount Graham, Arizona, appears to be a form of this, with the fruit minutely tuberculate. Galium aspeeeimum. Gray 1 (Pl. Fendl. p. 60).—Mount Graham, Ari¬ zona, 9,000 feet altitude (425). Ovary in my specimens minutely tuber¬ culate, rather than hairy. Mature fruit I have not seen. Indeed, I am not sure that the specimen may not prove to be G. Aparine, to which it appears closely related. If so, then it must be truly indigenous. Galium teifidum, L.—San Luis Valley, Colorado (15, 16). Galium boeeale, L.—Common and variable, in Colorado (17); Utah VALERIANACE^ Plecteitis congesta, DC.—Nevada Valeeiana dioica, L., var. sylvatica, Watson.—South Park, Colorado, at 10,000 feet (773). Valeeiana edulis, Nutt (V. ciliata, T. & G.)—Radical or stem leaves may be entire or pinnately parted, or with any degree of division between. Valerian odor is very strong in this species on boiling.—South Park (774). COMPOSITE. Stevia* canescens, Benth—Erect, 4-6° high, glabrous or puberulent below, rather roughly canescent above; leaves linear or oblanceolate, with smaller ones fascicled in their axils, serrate toward the apex, entire and * Stevia, Cav.—Flowers of the head all perfect aud tubular. Involucre of 5-6 narrow, hard, subequal bracts. Eeceptacle flat, naked. Corollas equal, regular, slender; limb sometimes rather large, 5-cleft. Stamens appendiculate, obtuse at base. Branches of the style long, slender, and obtuse. Achenia linear, 4-5-angled. Pappus of two kinds, i. e., small scales and bristle-like awns, one or both kinds present in the same flower.—Herbs or erect shrubs, not usually much branched. Leaves opposite, or the upper alternate, often 3-nerved and serrate, or sometimes 3-cleft or entire. Heads irregularly loosely paniculate. or in a close corymb. Flowers white or purple, sometimes a little longer than the involucre. Achenia smooth or ciliolate on the angles.—Bentham & Hooker.